Apparatus and method for measuring transmission delay time...

Details Apparatus and method for measuring transmission delay time... Apparatus and method for measuring transmission delay time...

2006-10-24

2006-10-24

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

C324S076190

Reexamination Certificate

active

07126321

ABSTRACT:
Transmission delay time measurement is performed on a signal propagation path between respective points of two printed circuit boards connected by a coaxial cable. Measurement is made of a frequency-domain response of the cable and a first time-domain response of the propagation path at its sending point and a second time-domain response of the propagation path at its receiving point. From the first time-domain response and the frequency-domain response, estimation is made of a third time-domain response of the propagation path that would be observed at the receiving point if there is no waveform distortion on the surface of the printed circuit boards. Time-domain correlation is calculated between the second and third time-domain responses. A first delay time is determined from the estimated time-domain response and a second delay time is determined from the correlation. The first and second delay times are summed to yield the transmission delay time of the propagation path.

REFERENCES:
patent: 4279019 (1981-07-01), Heyser
patent: 4654808 (1987-03-01), Potter et al.
patent: 6208946 (2001-03-01), Arakawa et al.
patent: 2006/0020410 (2006-01-01), Hsu et al.
patent: 2004-104235 (2004-04-01), None

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